New 2MASS near-infrared photometry for globular clusters in M31

Wang, Song; Ma, Jun; Wu, Zhenyu; Zhou, Xu

doi:10.1088/0004-6256/148/1/4

Title: New 2MASS near-infrared photometry for globular clusters in M31

Full Record
Other Related Research

Abstract

We present Two Micron All Sky Survey JHK {sub s} photometry for 913 star clusters and candidates in the field of M31, which are selected from the latest Revised Bologna Catalog of M31 globular clusters (GCs) and candidates. The photometric measurements in this paper supplement this catalog, and provide the most comprehensive and homogeneous photometric catalog for M31 GCs in the JHK {sub s} bandpasses. In general, our photometry is consistent with previous measurements. The globular cluster luminosity function (GCLF) peaks for the confirmed GCs derived by fitting a t {sub 5} distribution using the maximum likelihood method are J{sub 0}=15.348{sub −0.208}{sup +0.206}, H{sub 0}=14.703{sub −0.180}{sup +0.176}, and K{sub s0}=14.534{sub −0.146}{sup +0.142}, all of which agree well with previous studies. The GCLFs are different between metal-rich (MR) and metal-poor (MP), and between inner and outer subpopulations, as MP clusters are fainter than their MR counterparts and the inner clusters are brighter than the outer ones, which confirm previous results. The NIR colors of the GC candidates are on average redder than those of the confirmed GCs, which leads to an obscure bimodal distribution of color indices. The relation of (V – K {sub s}){sub 0} and metallicity shows a notablemore »« less

Authors:

Wang, Song; Ma, Jun; Wu, Zhenyu; Zhou, Xu ^[1]

Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012 (China)

Publication Date:: Tue Jul 01 00:00:00 EDT 2014

OSTI Identifier:: 22342313

Resource Type:: Journal Article

Journal Name:: Astronomical Journal (New York, N.Y. Online)

Additional Journal Information:: Journal Volume: 148; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1538-3881

Country of Publication:: United States

Language:: English

Subject:: 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; CATALOGS; COLOR; DISTRIBUTION; GALAXIES; LUMINOSITY; MASS; METALLICITY; PHOTOMETRY; SKY; STAR CLUSTERS

Citation Formats


                    Wang, Song, Ma, Jun, Wu, Zhenyu, and Zhou, Xu. New 2MASS near-infrared photometry for globular clusters in M31.  United States: N. p., 2014. 
        Web.  doi:10.1088/0004-6256/148/1/4.

Copy to clipboard


                    Wang, Song, Ma, Jun, Wu, Zhenyu, & Zhou, Xu. New 2MASS near-infrared photometry for globular clusters in M31.  United States.  https://doi.org/10.1088/0004-6256/148/1/4

Copy to clipboard


                    Wang, Song, Ma, Jun, Wu, Zhenyu, and Zhou, Xu. 2014.  
        "New 2MASS near-infrared photometry for globular clusters in M31".  United States.  https://doi.org/10.1088/0004-6256/148/1/4.

Copy to clipboard


                    
@article{osti_22342313,

  title        = {New 2MASS near-infrared photometry for globular clusters in M31},

  author       = {Wang, Song and Ma, Jun and Wu, Zhenyu and Zhou, Xu},

  abstractNote = {We present Two Micron All Sky Survey JHK {sub s} photometry for 913 star clusters and candidates in the field of M31, which are selected from the latest Revised Bologna Catalog of M31 globular clusters (GCs) and candidates. The photometric measurements in this paper supplement this catalog, and provide the most comprehensive and homogeneous photometric catalog for M31 GCs in the JHK {sub s} bandpasses. In general, our photometry is consistent with previous measurements. The globular cluster luminosity function (GCLF) peaks for the confirmed GCs derived by fitting a t {sub 5} distribution using the maximum likelihood method are J{sub 0}=15.348{sub −0.208}{sup +0.206}, H{sub 0}=14.703{sub −0.180}{sup +0.176}, and K{sub s0}=14.534{sub −0.146}{sup +0.142}, all of which agree well with previous studies. The GCLFs are different between metal-rich (MR) and metal-poor (MP), and between inner and outer subpopulations, as MP clusters are fainter than their MR counterparts and the inner clusters are brighter than the outer ones, which confirm previous results. The NIR colors of the GC candidates are on average redder than those of the confirmed GCs, which leads to an obscure bimodal distribution of color indices. The relation of (V – K {sub s}){sub 0} and metallicity shows a notable departure from linearity, with a shallower slope toward the redder end. The color-magnitude diagram (CMD) and color-color diagram show that many GC candidates are located out of the evolutionary tracks, suggesting that some of them may be false M31 GC candidates. The CMD also shows that the initial mass function of M31 GCs covers a large range, and the majority of the clusters have initial masses between 10{sup 3} and 10{sup 6} M {sub ☉}.},

  doi          = {10.1088/0004-6256/148/1/4},

  url          = {https://www.osti.gov/biblio/22342313},
  journal      = {Astronomical Journal (New York, N.Y. Online)},

  issn         = {1538-3881},

  number       = 1,

  volume       = 148,

  place        = {United States},

  year         = {Tue Jul 01 00:00:00 EDT 2014},

  month        = {Tue Jul 01 00:00:00 EDT 2014}

}

Copy to clipboard

Journal Article:

https://doi.org/10.1088/0004-6256/148/1/4

Other availability

Find in Google Scholar

Search WorldCat to find libraries that may hold this journal

Save / Share:

Export Metadata

Save to My Library

Similar records in OSTI.GOV collections:

SPECTRAL ENERGY DISTRIBUTIONS AND AGE ESTIMATES OF 104 M31 GLOBULAR CLUSTERS

Journal Article Song, Wang; Zhou, Fan; Jun, Ma; ... - Astronomical Journal (New York, N.Y. Online)

We present photometry of 104 M31 globular clusters (GCs) and GC candidates in 15 intermediate-band filters of the Beijing-Arizona-Taiwan-Connecticut photometric system. The GCs and GC candidates were selected from the Revised Bologna Catalog (v.3.5). We obtain the cluster ages by comparing the photometric data with up-to-date theoretical synthesis models. The photometric data used are Galaxy Evolution Explorer far- and near-ultraviolet and Two Micron All Sky Survey near-infrared JHK {sub s} magnitudes, combined with optical photometry. The ages of our sample clusters cover a large range, although most clusters are younger than 10 Gyr. Combined with the ages obtained in ourmore »« less
https://doi.org/10.1088/0004-6256/139/4/1438; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA)
AGE AND STRUCTURE PARAMETERS OF THE REMOTE M31 GLOBULAR CLUSTER B514 BASED ON HST, 2MASS, GALEX, AND BATC OBSERVATIONS

Journal Article Jun, Ma; Song, Wang; Zhenyu, Wu; ... - Astronomical Journal (New York, N.Y. Online)

B514 is a remote M31 globular cluster (GC) which is located at a projected distance of R{sub p} {approx_equal} 55 kpc. Deep observations with the Advanced Camera for Surveys on the Hubble Space Telescope are used to provide accurate integrated light and star counts of B514. By coupling the analysis of the distribution of the integrated light with star counts, we are able to reliably follow the profile of the cluster out to {approx}40''. Based on the combined profile, we study in detail its surface brightness distribution in the F606W and F814W filters and determine its structural parameters by fittingmore »« less
https://doi.org/10.1088/0004-6256/143/2/29
DEEP, WIDE-FIELD CCD PHOTOMETRY FOR THE OPEN CLUSTER NGC 3532

Journal Article Clem, James; Landolt, Arlo; Hoard, D; ... - Astronomical Journal (New York, N.Y. Online)

We present the results of a deep, wide-field CCD survey for the open cluster NGC 3532. Our new BV(RI){sub c} photometry effectively covers a one square degree area and reaches an unprecedented depth of V {approx} 21 to reveal that NGC 3532 is a rich open cluster that harbors a large number of faint, low-mass stars. We employ a number of methods to reduce the impact of field star contamination in the cluster color-magnitude diagrams (CMDs), including supplementing our photometry with JHK{sub s} data from the 2MASS catalog. These efforts allow us to define a robust sample of candidate main-sequencemore »« less
https://doi.org/10.1088/0004-6256/141/4/115
STROeMGREN PHOTOMETRY OF GALACTIC GLOBULAR CLUSTERS. II. METALLICITY DISTRIBUTION OF RED GIANTS IN omega CENTAURI

Journal Article Calamida, A; Hilker, M; Bono, G - Astrophysical Journal

We present new intermediate-band Stroemgren photometry based on more than 300 u, v, b, y images of the Galactic globular cluster omega Cen. Optical data were supplemented with new multiband near-infrared (NIR) photometry (350 J, H, K{sub s} images). The final optical-NIR catalog covers a region of more than 20 x 20 arcmin squared across the cluster center. We use different optical-NIR color-color planes together with proper-motion data available in the literature to identify candidate cluster red-giant (RG) stars. By adopting different Stroemgren metallicity indices, we estimate the photometric metallicity for approx4000 RGs, the largest sample ever collected. The metallicitymore »« less
https://doi.org/10.1088/0004-637X/706/2/1277
SPECTRAL ENERGY DISTRIBUTIONS AND AGE ESTIMATES OF 39 GLOBULAR CLUSTERS IN M31

Journal Article Jun, Ma; Zhou, Fan; De Grijs, Richard; ... - Astronomical Journal (New York, N.Y. Online)

This paper supplements Jiang et al., who studied 172 M31 globular clusters (GCs) and GC candidates from Battistini et al. on the basis of integrated photometric measurements in the Beijing-Arizona-Taiwan-Connecticut (BATC) photometric system. Here, we present multicolor photometric CCD data (in the BATC system) for the remaining 39 M31 GCs and candidates. In addition, the ages of 35 GCs are constrained by comparing our accurate photometry with updated theoretical stellar synthesis models. We use photometric measurements from the Galaxy Evolution Explorer in the far- and near-ultraviolet and Two Micron All Sky Survey infrared JHK{sub s} data, in combination with opticalmore »« less
https://doi.org/10.1088/0004-6256/137/6/4884; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA)

Similar Records